ASTROSAT CZTI

Data Quality Report

Orbit 33944

Creation date: 2024-06-27T20:54:23.773842
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_046T03_9000004848_33944cztM0_level2.evt modeM0/AS1A11_046T03_9000004848_33944cztM0_level2_quad_clean.evt
Size (bytes)492,629,76071,884,800
Size469.8 MB 68.6 MB
Events in quadrant A2,565,226477,281
Events in quadrant B3,530,042467,817
Events in quadrant C3,410,821456,453
Events in quadrant D5,075,828425,974

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102793
B0134082
C0135632
D0184592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498320.040136%
B49833096.201084%
C4983931.866346%
D498368413.726671%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7046 4984 0 0 0.00% 0.00%
B 7046 4984 184 184 2.61% 3.69%
C 7046 4984 68 68 0.97% 1.36%
D 7046 4984 595 595 8.44% 11.94%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 13961 101.75 658 646 130.9
A 13 6 8763 62.03 658 646 130.9
A 13 254 7473 52.17 658 646 130.9
B 5 172 920568 7786.27 628 614 118.2
B 15 35 41110 342.75 628 614 118.2
B 4 81 37551 312.63 628 614 118.2
C 0 10 342305 2417.21 621 625 141.4
C 15 214 217628 1535.18 621 625 141.4
C 14 67 191748 1352.09 621 625 141.4
D 8 230 1037864 7129.44 599 581 145.5
D 8 195 550178 3777.48 599 581 145.5
D 12 6 539833 3706.38 599 581 145.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter